It will become the most expensive home sold in Queensland if it makes the $25 million asking price.

Mandalay House includes a private helipad, marina and a pool overlooking the ocean.Source:Supplied

A handy mortgage calculator on the luxuryrealestate.com website estimates mortgage repayments if you can stump up a 40 per cent deposit.

At an interest rate of 6 per cent it would take 360 monthly payments of $90,000 - far more than the average Queenslander earns in a year - before it was all yours.

While the typical estate agent may be tasked with finding a two-car garage or family-friendly yard, top-end buyers expect a special service.

"Nothing's out of the realms of possibility,'' said Lewis Shaw, from Shaw Property Group, who uses Bentleys and helicopters to take prospective buyers to properties.

"If you go to a car dealership and you buy a Mercedes or something they give you champagne and chocolates and that's just a car. This is 10 times the value so why shouldn't you go 10 times that?''

The group celebrate sales by giving buyers 10-litre bottles of Moet champagne and wrapping entire houses in a giant red bow.

Mr Shaw said "probably three quarters'' of his clients were from mainland China or Hong Kong, with some properties so exclusive they are only marketed overseas.

The Eagle's Nest on the Sunshine Coast has a 150-acre 18-hole golf course.Source:Supplied

Nicolette van Wijngaarden from Unique Estates has listings including The Eagle's Nest in the Sunshine Coast hinterland which comes with a private, 150-acre 18-hole golf course and a $17.5 million guide price.